US 12,249,472 B2
Controlling a controllably conductive device based on zero-crossing detection
Robert W. Lenig, Bethlehem, PA (US); Michael Sizemore, Center Valley, PA (US); Joshua W. Thaler, Philadelphia, PA (US); and Russell L. MacAdam, Coopersburg, PA (US)
Assigned to Lutron Technology Company LLC, Coopersburg, PA (US)
Filed by Lutron Technology Company LLC, Coopersburg, PA (US)
Filed on Feb. 8, 2024, as Appl. No. 18/436,452.
Application 18/436,452 is a continuation of application No. 18/149,113, filed on Jan. 1, 2023, granted, now 11,935,714.
Application 18/149,113 is a continuation of application No. 17/360,640, filed on Jun. 28, 2021, granted, now 11,545,324, issued on Jan. 3, 2023.
Application 17/360,640 is a continuation of application No. 16/578,929, filed on Sep. 23, 2019, granted, now 11,056,304, issued on Jul. 6, 2021.
Application 16/578,929 is a continuation of application No. 15/997,328, filed on Jun. 4, 2018, granted, now 10,424,451, issued on Sep. 24, 2019.
Application 15/997,328 is a continuation of application No. 14/506,204, filed on Oct. 3, 2014, granted, now 9,991,075, issued on Jun. 5, 2018.
Claims priority of provisional application 61/886,962, filed on Oct. 4, 2013.
Claims priority of provisional application 61/887,006, filed on Oct. 4, 2013.
Prior Publication US 2024/0177954 A1, May 30, 2024
Int. Cl. H01H 47/18 (2006.01); H01H 9/56 (2006.01)
CPC H01H 47/18 (2013.01) [H01H 9/56 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An electric load controller, comprising:
electric load control circuitry to:
retrieve from memory circuitry data representative of a relay actuation adjustment time period;
retrieve, from the memory circuitry, data representative of a controllably conductive device bounce duration;
scale the controllably conductive device bounce duration by a scaling factor to provide a scaled;
determine a relay actuation time using an alternating current (AC) cycle time minus the relay actuation adjustment time period minus the scaled controllably conductive device bounce duration;
receive an input from zero cross detection circuitry indicative of a zero crossing of an AC source voltage; and
responsive to receipt of the zero cross detection signal:
communicate a controllably conductive device actuation signal to a controllably conductive device at the determined relay actuation time.